Am 18.06.2012 15:56, schrieb Mark Nelson:
On 6/18/12 2:40 AM, Stefan Priebe - Profihost AG wrote:
Hi list,
i've still problems with stable network speed under recent kernels. With
3.0.32 i get stable 9.90 Gbit/s in both directions. With 3.4.2 or
3.5.0-rc2 it drops sometimes down to around 1 Gbit/s. Sadly i've no idea
when this happen? It works sometimes for minutes at 9.9Gbit/s and then
suddently only with 3-4Gbit/s or even 1Gbit/s using recent kernels.
I'm using various tunings recommanded by intel (Improving Performance)
=> http://downloadmirror.intel.com/5874/eng/README.txt
Hi Stefan,
Did you ever get a chance to talk to Jason Wang about the commit that
was causing the problems? It might be a good idea to report all of this
upstream and see what they have to say.
Hi Mark,
yes i talked to him and he told me that his change was partically
removed in more recent kernel version.
Right now i'm in discussion with eric dumazet at the netdev kernel
mailinglist. And he gives me some good advices which seem to work well.
I'm still testing and will share the results here.
Stefan
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